< ARLEU_JÚNIOR />
<ARLEU_JÚNIOR/>

AGRONOMY · BACKEND · DATA

Hi, I’m

ArleuJúnior

API Development

I am an Agronomy student building practical experience in backend development and data.

Open to internship and junior opportunities
Explore Projects View Resume Contact Me
  • Python
  • FastAPI
  • SQL
  • PostgreSQL
  • Docker
Arleu Júnior
Current focus Backend and Data APIs, automation, and data systems
Agronomy Undergraduate Federal University of Viçosa Viçosa, Brazil

ABOUT ME

Technology applied to process improvement.

My background helps me understand the process before considering the technical solution.

Arleu Júnior in an agricultural setting

Arleu Júnior

I am in the final year of my Agronomy degree at the Federal University of Viçosa. Throughout my academic and professional experience, the importance of collecting, organizing, and interpreting data has become clear. Precision agriculture shows how information from different sources can be combined to monitor crops and support management decisions.

The connection between technology and operations showed me how programming can improve processes. I became interested in solutions that integrate data, automate routines, and reduce manual work, especially in processes that depend on multiple records, checks, and manual updates.

I currently build projects with Python, FastAPI, SQL, and PostgreSQL, while also using Docker, Git, automated tests, and continuous integration. I have focused my studies on backend development, REST APIs, relational data modeling, and data processing.

I am seeking an internship or junior position in backend development or data, in an environment with deadlines, deliverables, and technical review. I want to apply what I have been building to systems used by other people and expand my professional experience in the field.

FEATURED PROJECTS Scroll to explore ↓

IOT · BACKEND · DATA · AUTOMATION

AgriSentry — Ecosystem

An evolving ecosystem connecting field devices, telemetry ingestion, monitoring and automation, and assembly documentation — from the physical sensor to the application.

  • AgriSentry Platform: application for IoT monitoring and automation in agricultural environments.
  • Device: MicroPython firmware for ESP32, sensors, MQTT telemetry, durable sequencing, and offline cache with replay after reconnection.
  • IoT Gateway: Rust gateway for MQTT/HTTP ingestion, event validation, and PostgreSQL telemetry persistence.
  • Assembly Docs: turns a text-based assembly specification into validated connections, visual documentation, and test firmware for the hardware.
Application Device IoT Gateway Assembly Docs

BACKEND · OCR · DOCUMENT DATA

RefEngine

Local application for ingesting academic sources, reviewing bibliographic metadata, and generating references according to UFV standards.

  • PDF, RIS, and BibTeX ingestion
  • OCR for documents without extractable text
  • Required-field validation and conflict identification
  • Metadata review through PATCH endpoints
  • FastAPI API, React interface, and automated tests
  • Offline execution and formatted export
View Repository

REACT · VALIDATION · AUTOMATION

tccBuilder

Local application for filling, validating, and generating an undergraduate thesis from the template used by UFV’s Agronomy program.

  • React interface with controlled forms
  • Content organized into editable sections and fields
  • Required-information validation
  • Review states and error handling
  • Local execution with Node.js
  • Final-document generation from the UFV template
View Repository

OTHER PROJECTS

Additional projects and developer tools

CottonAgronomic data

AgriSentry Cotton

Agronomic platform for organizing fields, crop cycles, scouting, and spatial data applied to cotton production.

PythonFastAPIPostgreSQLPostGISVueTypeScript
View Repository
Development securityUsed across my projects

DevGuard Core

Secret scanner built in Rust and used across my projects to help prevent API keys, tokens, and other sensitive credentials from being accidentally committed.

RustRegexShannon EntropyGit HooksCI/CD
View Repository
EXPERIENCE Scroll through the journey ↓

OPERATIONS · BIOSECURITY · TRACEABILITY

2025–2026

Pif Paf Alimentos

Poultry Production Intern

  • Worked in a corporate environment driven by deadlines, results, training, and strict compliance with operational and biosecurity protocols.
  • Worked alongside the field technical team in daily broiler production routines, monitoring biosecurity, house preparation, and flock conditions.
  • Supported biological sampling, field necropsies, and pre-slaughter visual assessments under established operational protocols.
  • Observed recurring challenges involving operational records, traceability, and the organization of field information.
Arleu Júnior during poultry production activities

CONTROLLED CULTIVATION · FIELD DATA

2022–2025

ADWA Cannabis

Field Operations Intern

  • Recorded environmental and crop variables in protected cultivation facilities and nursery environments.
  • Supported propagation, fertilization, crop protection, harvest, and post-harvest activities.
  • Organized production records to improve traceability across recurring operational routines.
  • Assisted with data collection and field activities for applied agronomic research.
Arleu Júnior during controlled cultivation activities

COTTON · TECHNICAL EVENTS · FIELD

2025–Present

GeCotton UFV — Cotton Study Group

Technical Events Assistant

  • Support the planning of group activities, including schedules, calendars, speaker outreach, and technical agendas.
  • Support technical and scientific events focused on cotton, agricultural machinery, and technology transfer.
  • Collaborate on materials and activities involving researchers, producers, professors, and companies.
  • Assist with field activities and the collection of technical information for the group.
Arleu Júnior during a GeCotton technical activity

LABORATORY · EXPERIMENTS · RECORDS

2025–2026

BraIN and Phy Lab · UFV

Laboratory Intern

  • Maintained and monitored insect colonies used in controlled experiments.
  • Supported bioinsecticide trials following standardized laboratory protocols.
  • Organized experimental records and assisted with result interpretation.
  • Supported the preparation of materials and scientific communication activities related to the laboratory's work.
Arleu Júnior during laboratory activities at UFV

TECHNICAL SKILLS

Technologies I use in my projects.

I organize my technical skills around the activities I have been practicing in backend development, data processing, and automation.

Backend and APIs

Development of REST APIs, authentication, asynchronous persistence, and application rules.

  • Python, FastAPI, SQLAlchemy, and Pydantic
  • REST APIs, OpenAPI, and JWT
  • AsyncIO, Redis, and Celery
  • Pytest and pytest-asyncio

Databases and data

Modeling, validation, and processing of relational, geospatial, and document data.

  • PostgreSQL, PostGIS, and relational modeling
  • SQL and Pandas
  • Validation, normalization, and deduplication
  • PDF, RIS, BibTeX, and OCR

Integration and development

Technologies used to connect interfaces, services, telemetry, and automated quality checks.

  • Vue 3, TypeScript, React, and Node.js
  • Docker, Git, and GitHub
  • GitHub Actions and CI/CD
  • Rust, Actix Web, SQLx, and MQTT

Currently Learning

Technologies and topics I am actively deepening, including a practical automation program.

  • Santander Automation with n8n — Santander + DIO (selected participant; starts August 31, 2026)
  • n8n, APIs, webhooks, AI-powered automation, and RPA
  • PySpark and data pipeline fundamentals
  • Cloud deployment fundamentals
  • Database performance and observability

CONTACT

Let’s talk about opportunities, projects, and technical challenges.

I am open to internship and junior opportunities in backend development, data, and web solutions, with particular interest in remote and international teams.

Direct contact

Choose the most convenient channel.

WhatsApp Start a direct conversation Email arleujr30@gmail.com LinkedIn Professional profile and updates GitHub Repositories and technical work
Based in Viçosa, Minas Gerais, Brazil Available for remote and hybrid opportunities

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